private HResult StartDirectoryEnumeration(int commandId, Guid enumerationId, string relativePath)
{
Console.WriteLine($"StartDirectoryEnumeration: `{relativePath}`, {enumerationId}");
// On Windows, we have to sort the child items. The PrjFlt driver takes our list and merges it with
// what is on disk, and it assumes that both lists are already sorted.
ActiveEnumeration activeEnumeration = new ActiveEnumeration(
this.GetChildItems(relativePath)
.OrderBy(file => file.Name, StringComparer.OrdinalIgnoreCase)
.ToList());
if (!this.activeEnumerations.TryAdd(enumerationId, activeEnumeration))
{
return(HResult.InternalError);
}
return(HResult.Ok);
}
private HResult GetDirectoryEnumeration(
Guid enumerationId,
string filterFileName,
bool restartScan,
DirectoryEnumerationResults results)
{
Console.WriteLine($"GetDiretoryEnumeration: {enumerationId}, {filterFileName}");
try
{
ActiveEnumeration activeEnumeration = null;
if (!this.activeEnumerations.TryGetValue(enumerationId, out activeEnumeration))
{
return(HResult.InternalError);
}
if (restartScan)
{
activeEnumeration.RestartEnumeration(filterFileName);
}
else
{
activeEnumeration.TrySaveFilterString(filterFileName);
}
bool entryAdded = false;
HResult result = HResult.Ok;
while (activeEnumeration.IsCurrentValid)
{
ProjectedFileInfo fileInfo = activeEnumeration.Current;
DateTime now = DateTime.UtcNow;
result = results.Add(
fileName: fileInfo.Name,
fileSize: (ulong)(fileInfo.IsDirectory ? 0 : fileInfo.Size),
isDirectory: fileInfo.IsDirectory,
fileAttributes: fileInfo.IsDirectory ? (uint)FileAttributes.Directory : (uint)FileAttributes.Archive,
creationTime: now,
lastAccessTime: now,
lastWriteTime: now,
changeTime: now);
if (result == HResult.Ok)
{
entryAdded = true;
activeEnumeration.MoveNext();
}
else
{
if (result == HResult.InsufficientBuffer)
{
if (entryAdded)
{
result = HResult.Ok;
}
}
break;
}
}
return(result);
}
catch (Win32Exception e)
{
return(HResultFromWin32(e.NativeErrorCode));
}
catch (Exception)
{
return(HResult.InternalError);
}
}
